sprintf(buffer,"**System used for compilation:\n");
output_string(buffer);
sprintf(buffer,"**Linux  2.6\n");
output_string(buffer);
sprintf(buffer,"**C compiler: gcc version xxx\n");
output_string(buffer);
sprintf(buffer,"**libc: xxx\n");
output_string(buffer);
sprintf(buffer,"**Date of compilation: xxx\n");
output_string(buffer);
